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Susceptibility gene for Alzheimer's disease

a gene and susceptibility technology, applied in the field of gene susceptibility to alzheimer's disease, can solve the problems of alzheimer's disease patients being more prone to certain types of cancer, and becoming a major health problem in the western world

Inactive Publication Date: 2010-11-30
OXFORD UNIV INNOVATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]As illustrated in the accompanying Examples, the inventor has shown that the presence of the variant p21E2c31 “A” allele is significantly associated with increased risk of developing Alzheimer's disease in male subjects and with a reduction in age of onset of Alzheimer's disease in female subjects, as compared to individuals homozygous for the normal allele p21E2c31 “C”. The significance of these associations is increased when the p21E2c31 “A” allele occurs together with the p21 E3+20 “T” allele.
[0037]The above-described screening methods may be used prognostically to identify individuals pre-disposed to Alzheimer's disease (AD) by virtue of their genetic make-up. The “pre-disposition to Alzheimer's disease” may be manifest as an increased risk of developing disease as compared to individuals who do not possess a variant allele (i.e. subjects who are homozygous for the corresponding normal allele(s) p21E2c31 “C”, p21E3+20 “C”), or as an earlier age of disease onset as compared to individuals who do not possess a variant allele. In a particular embodiment the method may be used to screen asymptomatic individuals (i.e. individuals who do not exhibit significant symptoms of AD according to standard diagnostic criteria) in order to identify those “at risk” of developing AD, and / or those likely to exhibit an earlier age of onset of AD. In particular embodiments, the screens may be used to assess risk of developing Alzheimer's disease in male human subjects or to assess likely age of onset of Alzheimer's disease in female human subjects. The results of such screens may facilitate early intervention with therapeutic treatments, particularly prophylactic treatments aimed at preventing, reducing or delaying the clinical symptoms of Alzheimer's disease.

Problems solved by technology

As life expectancy increases, Alzheimer's disease (AD) is becoming a major health problem in the western world.
There has been intensive research aimed at identifying a reliable cure or preventive measures for the disease, so far without success.
Furthermore, Alzheimer's disease patients are more prone to certain types of cancers than the age matched control subjects.

Method used

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  • Susceptibility gene for Alzheimer's disease
  • Susceptibility gene for Alzheimer's disease
  • Susceptibility gene for Alzheimer's disease

Examples

Experimental program
Comparison scheme
Effect test

example 1

Genotyping of p21cip 1 Polymorphisms

Patient Population

[0044]The subjects tested were full participants in the Oxford Project to Investigate Memory and Ageing (OPTIMA). The yearly routine OPTIMA examination includes a physical examination, cognitive and neuropsychological testing. Drug intake and any intercurrent infections are recorded.

Materials and Methods

Exon 2 of p21cip was amplified from genomic DNA (extracted from brain or blood) using primers 5′-CGGGATCCGGCGCCATGTCAGAACCGGC-3′ (SEQ ID NO: 1) and 5′-CCAGACAGGTCAGCCCTTGG-3′ (SEQ ID NO: 2) (Facher, E. A., et al., Association between human cancer and two polymorphisms occurring together in the p21Waf1 / Cip1 cyclin-dependent kinase inhibitor gene. Cancer, 1997. 79(12): p. 2424-9). PCR amplification was carried out in a final volume of 50 μl using 1.25 units of Tag DNA polymerase, 1.5 mM MgCl2, 0.1% Gelatine, 200 μM of each DNTP in PCR buffer (75 mM Tris-HCl, pH 8.8, 20 mM (NH4)2SO4 and 0.01% Tween). The hot start (95° C. for 5′) was...

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Abstract

The invention relates to genetic screens for susceptibility to Alzheimer's disease. In particular, the invention provides genetic screens based on genotyping of the p21E2c31 polymorphism and / or the p21E3+20 C / T polymorphism in the p21cip 1 gene.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a National Stage application based on International Application No. PCT / GB2004 / 002222, filed May 21, 2004, which claims priority to Great Britain Application No. 0311835.3, filed May 22, 2003, the disclosures of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to genetic screens for susceptibility to Alzheimer's disease. In particular, the invention relates to genetic screens based on genotyping of the p21E2c31 polymorphism and / or the p21E3+20 C / T polymorphism in the p21cip 1 gene.BACKGROUND TO THE INVENTION[0003]As life expectancy increases, Alzheimer's disease (AD) is becoming a major health problem in the western world. There has been intensive research aimed at identifying a reliable cure or preventive measures for the disease, so far without success.[0004]It is becoming widely accepted that cell cycle re-entry and subsequent regulatory failure in neurons is at th...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C12Q1/68C07H21/04C12Q1/6883
CPCC12Q1/6883C12Q2600/156
Inventor NAGY, ZSUZSANNA
Owner OXFORD UNIV INNOVATION LTD
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